-ic bbb bbc bbi bbm bbo bbr bbx bby bcb bcc bci bcm bco bcr bcx bcy bi- bib bic bii bim bio bir bix biy bmb bmc bmi bmm bmo bmr bmx bob boc boi bom boo bor box boy brb bri brm bro brr brx bry bxb bxi bxm bxo bxx by- byc byi bym byo byr c-- cbb cbc cbi cbm cbo cbr cbx cby ccb ccc cci ccm cco ccr ccx ci- cib cic cii cim cio cir cix cmb cmc cmi cmm cmo cmr cmx cmy co- cob coc coi com coo cor cox coy crb crc cri crm cro crr crx cry cxc cxi cxo cxr cxx cyb cyc cym cyo cyr ibb ibc ibi ibm ibo ibr ibx iby icb icc ici icm ico icr icy iib iic iii iim iio iir iix im- imb imc imi imm imo imx imy io- iob ioc ioi iom ioo ior ir- irb irc iri irm iro irr irx iry ixc ixi ixy iyc iym iyo iyr iyy m-o m-r mbb mbc mbi mbm mbo mbr mbx mc- mcb mcc mci mcm mco mcr mcx mi- mib mic mii mim mio mir mix miy mmb mmc mmi mmm mmo mmr mmx mob moc moi mom moo mor mox moy mrb mrc mri mrm mro mrr mrx mry mxc mxi mxr my- myb myc mym myo myr myx o-i ob- obb obc obi obm obo obr obx oby oc- ocb occ oci ocm oco ocr ocx oib oic oii oim oio oir om- omb omc omi omm omo omr omx omy oo- oob ooc ooi oom ooo oor oox or- orb orc ori orm oro orr orx ory ox- oxb oxc oxi oxo oxx oxy oyi oyo rbb rbc rbi rbm rbo rbr rbx rcb rcc rci rcm rco rcr rcx rib ric rii rim rio rir rix riy rmb rmc rmi rmm rmo rmr rmx rob roc roi rom roo ror rox roy rrb rrc rri rrm rrr rxr ry- ryc rym ryo ryr ryy xbc xbr xbx xcb xci xcr xcx xic xii xio xix xmc xmi xmm xmo xmr xmx xoc xoi xom xoo xor xox xrc xrx xry xxi xxo xxx xxy xyr xyy ybc ybi ybm ybr yby ycc yci yco ycy yii yim yio yir ymc ymi ymm ymo yob yoc yoi yom yoo yor yox yoy yrc yro yxy yyb yyc yyy